1
|
Alshammari M, Alshammari K, Alhassan S, Alshammari AH, Alotaibi T, Alotibi S, Ismael A, Taha TAM. A High-Performance Cr 2O 3/CaCO 3 Nanocomposite Catalyst for Rapid Hydrogen Generation from NaBH 4. NANOMATERIALS (BASEL, SWITZERLAND) 2024; 14:333. [PMID: 38392706 PMCID: PMC10893481 DOI: 10.3390/nano14040333] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/14/2024] [Revised: 01/29/2024] [Accepted: 02/01/2024] [Indexed: 02/24/2024]
Abstract
This study aims to prepare new nanocomposites consisting of Cr2O3/CaCO3 as a catalyst for improved hydrogen production from NaBH4 methanolysis. The new nanocomposite possesses nanoparticles with the compositional formula Cr2-xCaxO3 (x = 0, 0.3, and 0.6). These samples were prepared using the sol-gel method, which comprises gelatin fuel. The structure of the new composites was studied using X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), Raman spectroscopy, environmental scanning electron microscopy (ESEM), and X-ray spectroscopy (XPS). The XRD data showed the rhombohedral crystallinity of the studied samples, and the average crystal size was 25 nm. The FTIR measurements represented the absorption bands of Cr2O3 and CaO. The ESEM micrographs of the Cr2O3 showed the spherical shape of the Cr2O3 nanoparticles. The XPS measurements proved the desired oxidation states of the Cr2-xCaxO3 nanoparticles. The optical band gap of Cr2O3 is 3.0 eV, and calcium doping causes a reduction to 2.5 and 1.3 eV at 15.0 and 30.0% doping ratios. The methanolysis of NaBH4 involved accelerated H2 production when using Cr2-xCaxO3 as a catalyst. Furthermore, the Cr1.7Ca0.3O3 catalyst had the highest hydrogen generation rate, with a value of 12,750 mL/g/min.
Collapse
Affiliation(s)
- Majed Alshammari
- Physics Department, College of Science, Jouf University, P.O. Box 2014, Sakaka 72388, Saudi Arabia; (K.A.); (S.A.); (A.H.A.); (T.A.); (T.A.M.T.)
| | - Khulaif Alshammari
- Physics Department, College of Science, Jouf University, P.O. Box 2014, Sakaka 72388, Saudi Arabia; (K.A.); (S.A.); (A.H.A.); (T.A.); (T.A.M.T.)
| | - Sultan Alhassan
- Physics Department, College of Science, Jouf University, P.O. Box 2014, Sakaka 72388, Saudi Arabia; (K.A.); (S.A.); (A.H.A.); (T.A.); (T.A.M.T.)
| | - Alhulw H. Alshammari
- Physics Department, College of Science, Jouf University, P.O. Box 2014, Sakaka 72388, Saudi Arabia; (K.A.); (S.A.); (A.H.A.); (T.A.); (T.A.M.T.)
| | - Turki Alotaibi
- Physics Department, College of Science, Jouf University, P.O. Box 2014, Sakaka 72388, Saudi Arabia; (K.A.); (S.A.); (A.H.A.); (T.A.); (T.A.M.T.)
| | - Satam Alotibi
- Department of Physics, College of Science and Humanities in Al-Kharj, Prince Sattam bin Abdulaziz University, Al-Kharj 11942, Saudi Arabia;
| | - Ali Ismael
- Physics Department, Lancaster University, Lancaster LA1 4YB, UK;
| | - Taha Abdel Mohaymen Taha
- Physics Department, College of Science, Jouf University, P.O. Box 2014, Sakaka 72388, Saudi Arabia; (K.A.); (S.A.); (A.H.A.); (T.A.); (T.A.M.T.)
| |
Collapse
|
2
|
Leone L, Sgueglia G, La Gatta S, Chino M, Nastri F, Lombardi A. Enzymatic and Bioinspired Systems for Hydrogen Production. Int J Mol Sci 2023; 24:ijms24108605. [PMID: 37239950 DOI: 10.3390/ijms24108605] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2023] [Revised: 04/30/2023] [Accepted: 05/08/2023] [Indexed: 05/28/2023] Open
Abstract
The extraordinary potential of hydrogen as a clean and sustainable fuel has sparked the interest of the scientific community to find environmentally friendly methods for its production. Biological catalysts are the most attractive solution, as they usually operate under mild conditions and do not produce carbon-containing byproducts. Hydrogenases promote reversible proton reduction to hydrogen in a variety of anoxic bacteria and algae, displaying unparallel catalytic performances. Attempts to use these sophisticated enzymes in scalable hydrogen production have been hampered by limitations associated with their production and stability. Inspired by nature, significant efforts have been made in the development of artificial systems able to promote the hydrogen evolution reaction, via either electrochemical or light-driven catalysis. Starting from small-molecule coordination compounds, peptide- and protein-based architectures have been constructed around the catalytic center with the aim of reproducing hydrogenase function into robust, efficient, and cost-effective catalysts. In this review, we first provide an overview of the structural and functional properties of hydrogenases, along with their integration in devices for hydrogen and energy production. Then, we describe the most recent advances in the development of homogeneous hydrogen evolution catalysts envisioned to mimic hydrogenases.
Collapse
Affiliation(s)
- Linda Leone
- Department of Chemical Sciences, University of Naples Federico II, 80126 Naples, Italy
| | - Gianmattia Sgueglia
- Department of Chemical Sciences, University of Naples Federico II, 80126 Naples, Italy
| | - Salvatore La Gatta
- Department of Chemical Sciences, University of Naples Federico II, 80126 Naples, Italy
| | - Marco Chino
- Department of Chemical Sciences, University of Naples Federico II, 80126 Naples, Italy
| | - Flavia Nastri
- Department of Chemical Sciences, University of Naples Federico II, 80126 Naples, Italy
| | - Angela Lombardi
- Department of Chemical Sciences, University of Naples Federico II, 80126 Naples, Italy
| |
Collapse
|
3
|
Kumar N, Kaur‐Ghumaan S. Synthesis, Characterization and Electrochemical Studies of bis(Monothiolato) {FeFe} Complexes [Fe
2
(μ‐SC
6
H
4
‐OMe‐
m
)
2
(CO)
5
L] (L=CO, PCy
3
, PPh
3
). ChemistrySelect 2022. [DOI: 10.1002/slct.202203392] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Affiliation(s)
- Naveen Kumar
- Department of Chemistry University of Delhi Delhi 110007 India
| | | |
Collapse
|
4
|
2-Mercaptobenzimidazole ligand-based models of the [FeFe] hydrogenase: synthesis, characterization and electrochemical studies. J CHEM SCI 2022. [DOI: 10.1007/s12039-022-02027-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
|
5
|
Catalytic systems mimicking the [FeFe]-hydrogenase active site for visible-light-driven hydrogen production. Coord Chem Rev 2021. [DOI: 10.1016/j.ccr.2021.214172] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
|
6
|
Pandey I, Agarwal T, Mobin SM, Stein M, Kaur-Ghumaan S. Switching Site Reactivity in Hydrogenase Model Systems by Introducing a Pendant Amine Ligand. ACS OMEGA 2021; 6:4192-4203. [PMID: 33644543 PMCID: PMC7906588 DOI: 10.1021/acsomega.0c04901] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/07/2020] [Accepted: 12/24/2020] [Indexed: 06/12/2023]
Abstract
Hydrogenases are versatile enzymatic catalysts with an unmet hydrogen evolution reactivity (HER) from synthetic bio-inspired systems. The binuclear active site only has one-site reactivity of the distal Fed atom. Here, binuclear complexes [Fe2(CO)5(μ-Mebdt)(P(4-C6H4OCH3)3)] 1 and [Fe2(CO)5(μ-Mebdt)(PPh2Py)] 2 are presented, which show electrocatalytic activity in the presence of weak acids as a proton source for the HER. Despite almost identical structural and spectroscopic properties (bond distances and angles from single-crystal X-ray; IR, UV/vis, and NMR), introduction of a nitrogen base atom in the phosphine ligand in 2 markedly changes site reactivity. The bridging benzenedithiolate ligand Mebdt interacts with the terminal ligand's phenyl aromatic rings and stabilizes the reduced states of the catalysts. Although 1 with monodentate phosphine terminal ligands only shows a distal iron atom HER activity by a sequence of electrochemical and protonation steps, the lone pair of pyridine nitrogen in 2 acts as the primary site of protonation. This swaps the iron atom catalytic activity toward the proximal iron for complex 2. Density-functional theory (DFT) calculations reveal the role of terminal phosphines ligands without/with pendant amines by directing the proton transfer steps. The reactivity of 1 is a thiol-based protonation of a dangling bond in 1- and distal iron hydride mechanism, which may follow either an ECEC or EECC sequence, depending on the choice of acid. The pendant amine in 2 enables a terminal ligand protonation and an ECEC reactivity. The introduction of a terminal nitrogen atom enables the control of site reactivity in a binuclear system.
Collapse
Affiliation(s)
| | - Tashika Agarwal
- Department
of Chemistry, University of Delhi, Delhi 110007, India
| | - Shaikh M. Mobin
- Discipline
of Chemistry, Indian Institute of Technology
Indore, Simrol, Khandwa Road, Indore 453552, India
| | - Matthias Stein
- Max
Planck Institute for Dynamics of Complex Technical Systems, Sandtorstrasse 1, 39106 Magdeburg, Germany
| | - Sandeep Kaur-Ghumaan
- Department
of Chemistry, University of Delhi, Delhi 110007, India
- Max
Planck Institute for Dynamics of Complex Technical Systems, Sandtorstrasse 1, 39106 Magdeburg, Germany
| |
Collapse
|
7
|
Trinuclear nickel(II) amino acid Schiff base complex containing phenolato and acetato bridges: Structural and functional resemblance of urease. Inorganica Chim Acta 2021. [DOI: 10.1016/j.ica.2020.120109] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
|
8
|
Abstract
The role of deuterium in disentangling key steps of the mechanisms of H2 activation by mimics of hydrogenases is presented. These studies have allowed to a better understanding of the mode of action of the natural enzymes and their mimics.
Collapse
Affiliation(s)
- Mar Gómez-Gallego
- Departamento de Química Orgánica I and Center for Innovation in Advanced Chemistry (ORFEO-CINQA). Facultad de Química
- Universidad Complutense
- 28040-Madrid
- Spain
| | - Miguel A. Sierra
- Departamento de Química Orgánica I and Center for Innovation in Advanced Chemistry (ORFEO-CINQA). Facultad de Química
- Universidad Complutense
- 28040-Madrid
- Spain
| |
Collapse
|
9
|
Mebi CA, Gerasimchuk NN. Macrocyclic tetranuclear double-butterfly Fe/S carbonyl clusters as [FeFe]-hydrogenase models. Supramol Chem 2020. [DOI: 10.1080/10610278.2020.1837828] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- Charles A. Mebi
- Department of Physical Sciences, Arkansas Tech University, Russellville, AR, USA
| | | |
Collapse
|
10
|
Arrigoni F, Rizza F, Vertemara J, Breglia R, Greco C, Bertini L, Zampella G, De Gioia L. Rational Design of Fe 2 (μ-PR 2 ) 2 (L) 6 Coordination Compounds Featuring Tailored Potential Inversion. Chemphyschem 2020; 21:2279-2292. [PMID: 32815583 DOI: 10.1002/cphc.202000623] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2020] [Revised: 08/19/2020] [Indexed: 01/04/2023]
Abstract
It was recently discovered that some redox proteins can thermodynamically and spatially split two incoming electrons towards different pathways, resulting in the one-electron reduction of two different substrates, featuring reduction potential respectively higher and lower than the parent reductant. This energy conversion process, referred to as electron bifurcation, is relevant not only from a biochemical perspective, but also for the ground-breaking applications that electron-bifurcating molecular devices could have in the field of energy conversion. Natural electron-bifurcating systems contain a two-electron redox centre featuring potential inversion (PI), i. e. with second reduction easier than the first. With the aim of revealing key factors to tailor the span between first and second redox potentials, we performed a systematic density functional study of a 26-molecule set of models with the general formula Fe2 (μ-PR2 )2 (L)6 . It turned out that specific features such as i) a Fe-Fe antibonding character of the LUMO, ii) presence of electron-donor groups and iii) low steric congestion in the Fe's coordination sphere, are key ingredients for PI. In particular, the synergic effects of i)-iii) can lead to a span between first and second redox potentials larger than 700 mV. More generally, the "molecular recipes" herein described are expected to inspire the synthesis of Fe2 P2 systems with tailored PI, of primary relevance to the design of electron-bifurcating molecular devices.
Collapse
Affiliation(s)
- Federica Arrigoni
- Department of Biotechnology and Biosciences, University of Milano - Bicocca, Piazza della Scienza 2, 20126, Milan, Italy
| | - Fabio Rizza
- Department of Biotechnology and Biosciences, University of Milano - Bicocca, Piazza della Scienza 2, 20126, Milan, Italy
| | - Jacopo Vertemara
- Department of Biotechnology and Biosciences, University of Milano - Bicocca, Piazza della Scienza 2, 20126, Milan, Italy
| | - Raffaella Breglia
- Department of Earth and Environmental Sciences, University of Milano - Bicocca, Piazza della Scienza 1, 20126, Milan, Italy
| | - Claudio Greco
- Department of Earth and Environmental Sciences, University of Milano - Bicocca, Piazza della Scienza 1, 20126, Milan, Italy
| | - Luca Bertini
- Department of Biotechnology and Biosciences, University of Milano - Bicocca, Piazza della Scienza 2, 20126, Milan, Italy
| | - Giuseppe Zampella
- Department of Biotechnology and Biosciences, University of Milano - Bicocca, Piazza della Scienza 2, 20126, Milan, Italy
| | - Luca De Gioia
- Department of Biotechnology and Biosciences, University of Milano - Bicocca, Piazza della Scienza 2, 20126, Milan, Italy
| |
Collapse
|
11
|
Martinez JA, Gerasimchuk NN, Mebi CA. Synthesis, crystal structure, and thermal behavior of a diiron toluenethiolate complex with triphenylphosphine coligand. TRANSIT METAL CHEM 2020. [DOI: 10.1007/s11243-020-00409-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
12
|
Metalloenzyme mimic: diironhexacarbonyl cluster coupled to redox-active 4-mercapto-1,8-naphthalic anhydride ligands. TRANSIT METAL CHEM 2020. [DOI: 10.1007/s11243-020-00410-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
|
13
|
Agarwal T, Kaur-Ghumaan S. Mono- and dinuclear mimics of the [FeFe] hydrogenase enzyme featuring bis(monothiolato) and 1,3,5-triaza-7-phosphaadamantane ligands. Inorganica Chim Acta 2020. [DOI: 10.1016/j.ica.2020.119442] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
|
14
|
Faujdar H, Spannenberg A, Kaur-Ghumaan S. Structural and HER studies of diphosphine-monothiolate complexes [Fe2(CO)4(μ-naphthalene-2-thiolate)2(μ-dppe)] and [Fe2(CO)4(μ-naphthalene-2-thiolate)2(μ-DPEPhos)]. Inorganica Chim Acta 2020. [DOI: 10.1016/j.ica.2019.119227] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
|
15
|
Etinski M, Stanković IM, Puthenkalathil RC, Ensing B. A DFT study of structure and electrochemical properties of diiron-hydrogenase models with benzenedithiolato and benzenediselenato ligands. NEW J CHEM 2020. [DOI: 10.1039/c9nj04887a] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The chalcogen atom substitution in the Fe2(bdt)(CO)6 complex results in higher and lower proton affinities of iron and chalcogen atoms, respectively.
Collapse
Affiliation(s)
- Mihajlo Etinski
- Faculty of Physical Chemistry
- University of Belgrade
- 11000 Belgrade
- Serbia
| | | | - Rakesh C. Puthenkalathil
- Van't Hoff Institute for Molecular Sciences (HIMS)
- University of Amsterdam
- 1098 XH Amsterdam
- The Netherlands
| | - Bernd Ensing
- Van't Hoff Institute for Molecular Sciences (HIMS)
- University of Amsterdam
- 1098 XH Amsterdam
- The Netherlands
| |
Collapse
|
16
|
Gao S, Liu Y, Shao Y, Jiang D, Duan Q. Iron carbonyl compounds with aromatic dithiolate bridges as organometallic mimics of [FeFe] hydrogenases. Coord Chem Rev 2020. [DOI: 10.1016/j.ccr.2019.213081] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
|
17
|
Affiliation(s)
- Vishakha Kaim
- Department of Chemistry; University of Delhi; 110007 Delhi India
| | | |
Collapse
|
18
|
|
19
|
Diiron butane-2,3-dithiolate complexes with monophosphine coligands: synthesis, characterization, and electrochemistry. TRANSIT METAL CHEM 2019. [DOI: 10.1007/s11243-019-00355-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
|
20
|
Donovan ES, Plummer HM, Parada AS, Nichol GS, Felton GA. Pnictogen ligand coordination to an iron-sulfur compound. Inorganica Chim Acta 2019. [DOI: 10.1016/j.ica.2018.12.035] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
|
21
|
Kaim V, Natarajan M, Kaur‐Ghumaan S. Dinuclear Manganese Carbonyl Complexes: Electrocatalytic Reduction of Protons to Dihydrogen. ChemistrySelect 2019. [DOI: 10.1002/slct.201803754] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Vishakha Kaim
- Department of ChemistryUniversity of Delhi Delhi-110007 India
| | | | | |
Collapse
|
22
|
Oudsen JPH, Venderbosch B, Martin DJ, Korstanje TJ, Reek JNH, Tromp M. Spectroscopic and theoretical investigation of the [Fe2(bdt)(CO)6] hydrogenase mimic and some catalyst intermediates. Phys Chem Chem Phys 2019; 21:14638-14645. [DOI: 10.1039/c9cp01393h] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In [Fe–Fe] hydrogenase mimic systems the ene-1,2-dithiolene ligands play an important role in the stabilisation of the redox-active metal center.
Collapse
Affiliation(s)
- J. P. H. Oudsen
- Sustainable Materials Characterization
- van’t Hoff Institute for Molecular Sciences
- University of Amsterdam
- 1098 XH Amsterdam
- The Netherlands
| | - B. Venderbosch
- Sustainable Materials Characterization
- van’t Hoff Institute for Molecular Sciences
- University of Amsterdam
- 1098 XH Amsterdam
- The Netherlands
| | - D. J. Martin
- Sustainable Materials Characterization
- van’t Hoff Institute for Molecular Sciences
- University of Amsterdam
- 1098 XH Amsterdam
- The Netherlands
| | - T. J. Korstanje
- Sustainable Materials Characterization
- van’t Hoff Institute for Molecular Sciences
- University of Amsterdam
- 1098 XH Amsterdam
- The Netherlands
| | - J. N. H. Reek
- Homogeneous, Supramolecular and Bio-Inspired Catalysis
- van’t Hoff Institute for Molecular Sciences
- University of Amsterdam
- 1098 XH Amsterdam
- The Netherlands
| | - M. Tromp
- Sustainable Materials Characterization
- van’t Hoff Institute for Molecular Sciences
- University of Amsterdam
- 1098 XH Amsterdam
- The Netherlands
| |
Collapse
|
23
|
A tetranuclear iron complex: substitution with triphenylphosphine ligand and investigation into electrocatalytic proton reduction. J CHEM SCI 2018. [DOI: 10.1007/s12039-018-1529-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
24
|
Lu DT, He J, Yu XY, Liu XF, Li YL, Jiang ZQ. Diiron ethanedithiolate complexes with pendant ferrocene: Synthesis, characterization and electrochemistry. Polyhedron 2018. [DOI: 10.1016/j.poly.2018.04.015] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
25
|
Pandey IK, Natarajan M, Faujdar H, Hussain F, Stein M, Kaur-Ghumaan S. Intramolecular stabilization of a catalytic [FeFe]-hydrogenase mimic investigated by experiment and theory. Dalton Trans 2018; 47:4941-4949. [PMID: 29553150 DOI: 10.1039/c7dt04837h] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
The mono-substituted complex [Fe2(CO)5(μ-naphthalene-2-thiolate)2(P(PhOMe-p)3)] was prepared taking after the structural principles from both [NiFe] and [FeFe]-hydrogenase enzymes. Crystal structures are reported for this complex and the all carbonyl analogue. The bridging naphthalene thiolates resemble μ-bridging cysteine amino acids. One of the naphthyl moieties forms π-π stacking interactions with the terminal bulky phosphine ligand in the crystal structure and in calculations. This interaction stabilizes the reduced and protonated forms during electrocatalytic proton reduction in the presence of acetic acid and hinders the rotation of the phosphine ligand. The intramolecular π-π stabilization, the electrochemistry and the mechanism of the hydrogen evolution reaction were investigated using computational approaches.
Collapse
Affiliation(s)
| | - Mookan Natarajan
- Department of Chemistry, University of Delhi, Delhi 110007, India.
| | - Hemlata Faujdar
- Department of Chemistry, University of Delhi, Delhi 110007, India.
| | - Firasat Hussain
- Department of Chemistry, University of Delhi, Delhi 110007, India.
| | - Matthias Stein
- Max-Planck-Institute for Dynamics of Complex Technical Systems, Molecular Simulations and Design Group, Sandtorstrasse 1, 39106 Magdeburg, Germany.
| | - Sandeep Kaur-Ghumaan
- Department of Chemistry, University of Delhi, Delhi 110007, India. and Max-Planck-Institute for Dynamics of Complex Technical Systems, Molecular Simulations and Design Group, Sandtorstrasse 1, 39106 Magdeburg, Germany.
| |
Collapse
|
26
|
Synthesis, characterisation and protonation of phosphate disubstituted derivatives with pyridyl-functionalized diiron. Inorganica Chim Acta 2018. [DOI: 10.1016/j.ica.2017.11.028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
|
27
|
Mebi C, Gerasimchuk N, Labrecque J. Crystal and electronic structure of a hexacarbonyldiiron cluster tethered to naphthalene-2-thiolate ligands. ACTA CRYSTALLOGRAPHICA SECTION C-STRUCTURAL CHEMISTRY 2018; 74:224-228. [PMID: 29400339 DOI: 10.1107/s2053229618000712] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/15/2017] [Accepted: 01/11/2018] [Indexed: 11/10/2022]
Abstract
The structure of the previously reported complex bis(μ-naphthalene-2-thiolato-κ2S:S)bis(tricarbonyliron)(Fe-Fe), [Fe2(C10H7S)2(CO)6], has been characterized by X-ray diffraction. In the solid state, the dinuclear complex adopts a butterfly-like shape, with an equatorial-axial spatial orientation of the naphthalene groups covalently coupled to the [S2Fe2(CO)6] unit. The asymmetric unit contains three independent [(μ-naphthalene-2-thiolato)2Fe2(CO)6] molecules. These molecules show intermolecular π-π stacking interactions between the naphthalene rings, which was confirmed by Hirshfield surface analysis. The electronic spectrum of the complex recorded in acetonitrile shows a band centered at 350 nm (ℇ = 4.6 × 103 M-1 cm-1) and tailing into the visible region. This absorption can be attributed to a π→π* electronic transition within the naphthalene moiety and a metal-based d→d transition.
Collapse
Affiliation(s)
- Charles Mebi
- Department of Physical Sciences, Arkansas Tech University, 1701 N. Boulder Ave, Russellville, Arkansas 72801, USA
| | - Nikolay Gerasimchuk
- Department of Chemistry, Missouri State University, 901 South National Avenue, Springfield, Missouri 65897, USA
| | - Jordan Labrecque
- Department of Physical Sciences, Arkansas Tech University, 1701 N. Boulder Ave, Russellville, Arkansas 72801, USA
| |
Collapse
|
28
|
Electrochemical Proton Reductions Catalyzed by the Simpler Hexacoordinate Iron Compounds as Functional Mimics of the Active Site in [FeFe] Hydrogenase. Electrocatalysis (N Y) 2018. [DOI: 10.1007/s12678-017-0453-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
|
29
|
Sheng YD, Yu XY, Liu XF, Li YL. 2-(Diphenylphosphino)benzaldehyde or isopropyldiphenylphosphine substituted diiron dithiolate complexes. Polyhedron 2017. [DOI: 10.1016/j.poly.2017.08.029] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
|
30
|
Zhao P, Liu XF, Wu HK. Carbonyl substitution of the dicobalt-iron complex ( μ3-S)FeCo 2(CO) 9 with monophosphane or diphosphane ligands. J COORD CHEM 2017. [DOI: 10.1080/00958972.2017.1372752] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Peng Zhao
- School of Materials and Chemical Engineering, Ningbo University of Technology, Ningbo, China
| | - Xu-Feng Liu
- School of Materials and Chemical Engineering, Ningbo University of Technology, Ningbo, China
| | - Hong-Ke Wu
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou, China
| |
Collapse
|
31
|
Natarajan M, Faujdar H, Mobin SM, Stein M, Kaur-Ghumaan S. A mononuclear iron carbonyl complex [Fe(μ-bdt)(CO) 2(PTA) 2] with bulky phosphine ligands: a model for the [FeFe] hydrogenase enzyme active site with an inverted redox potential. Dalton Trans 2017; 46:10050-10056. [PMID: 28731078 DOI: 10.1039/c7dt01994g] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A mononuclear hexa-coordinated iron carbonyl complex [Fe(μ-bdt)(CO)2(PTA)2] 1 (bdt = 1,2-benzenedithiolate; PTA = 1,3,5-triaza-7-phosphaadamantane) with two bulky phosphine ligands in the trans position was synthesized and characterized by X-ray structural analysis coulometry data, FTIR, electrochemistry and electronic structure calculations. The complex undergoes a facilitated two-electron reduction 1/12- and shows an inverted one-electron reduction for 1/1- at higher potentials. Electrochemical investigations of 1 are compared to the closely related [Fe(bdt)(CO)2(PMe3)2] compound. A mechanistic suggestion for the hydrogen evolution reaction upon proton reduction from acid media is derived. The stability of 1 in both weak and strong acids is monitored by cyclic voltammetry.
Collapse
Affiliation(s)
- M Natarajan
- Department of Chemistry, University of Delhi, Delhi 110007, India.
| | | | | | | | | |
Collapse
|
32
|
Guo G, Gao HL, Shen FS, Ge SW, Shang JY, Li CG. Phenyl-functionalized diiron propanedithiolato complexes with a chelated 1,2-bis(diphenylphosphino)benzene ligand. J COORD CHEM 2017. [DOI: 10.1080/00958972.2017.1366997] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Ge Guo
- College of Chemistry & Chemical Engineering, Henan Institute of Science and Technology, Xinxiang, China
| | - Hui-Ling Gao
- College of Chemistry & Chemical Engineering, Henan Institute of Science and Technology, Xinxiang, China
| | - Feng-Sha Shen
- College of Chemistry & Chemical Engineering, Henan Institute of Science and Technology, Xinxiang, China
| | - Shi-Wei Ge
- College of Chemistry & Chemical Engineering, Henan Institute of Science and Technology, Xinxiang, China
| | - Jing-Yan Shang
- College of Chemistry & Chemical Engineering, Henan Institute of Science and Technology, Xinxiang, China
| | - Chang-Gong Li
- College of Chemistry & Chemical Engineering, Henan Institute of Science and Technology, Xinxiang, China
| |
Collapse
|
33
|
Synthetic and structural studies of diiron toluenedithiolate complexes coordinated by monophosphine or bridging diphosphine ligands. Polyhedron 2017. [DOI: 10.1016/j.poly.2017.02.048] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
34
|
Synthesis and electrochemical properties of [FeFe]-hydrogenase model complexes with acid-functionalized or base-functionalized ligands. J APPL ELECTROCHEM 2017. [DOI: 10.1007/s10800-017-1064-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
35
|
Natarajan M, Pandey IK, Kaur-Ghumaan S. Synthesis and Electrocatalysis of Diiron Monothiolate Complexes: Small Molecule Mimics of the [FeFe] Hydrogenase Enzyme. ChemistrySelect 2017. [DOI: 10.1002/slct.201700084] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Mookan Natarajan
- Department of Chemistry; University of Delhi; Delhi- 110007 India
| | | | | |
Collapse
|
36
|
Pandey IK, Natarajan M, Hemlata, Hussain F, Kaur-Ghumaan S. Diiron Complexes [Fe2(CO)5(μ-pdt/Mebdt)(L)] Containing a Chelating Diphosphine Ligand L=(Oxydi-2,1-phenylene)bis(diphenylphosphine): Bioinspired [FeFe] Hydrogenase Model Complexes. ChemistrySelect 2016. [DOI: 10.1002/slct.201601216] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
| | - Mookan Natarajan
- Department of Chemistry; University of Delhi; Delhi- 110007 India
| | - Hemlata
- Department of Chemistry; University of Delhi; Delhi- 110007 India
| | - Firasat Hussain
- Department of Chemistry; University of Delhi; Delhi- 110007 India
| | | |
Collapse
|
37
|
Blank JH, Moncho S, Lunsford AM, Brothers EN, Darensbourg MY, Bengali AA. Ligand Displacement Reaction Paths in a Diiron Hydrogenase Active Site Model Complex. Chemistry 2016; 22:12752-60. [PMID: 27482938 DOI: 10.1002/chem.201601677] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2016] [Indexed: 11/06/2022]
Abstract
The mechanism and energetics of CO, 1-hexene, and 1-hexyne substitution from the complexes (SBenz)2 [Fe2 (CO)6 ] (SBenz=SCH2 Ph) (1-CO), (SBenz)2 [Fe2 (CO)5 (η(2) -1-hexene)] (1-(η(2) -1-hexene)), and (SBenz)2 [Fe2 (CO)5 (η(2) -1-hexyne)] (1-(η(2) -1-hexyne)) were studied by using time-resolved infrared spectroscopy. Exchange of both CO and 1-hexyne by P(OEt)3 and pyridine, respectively, proceeds by a bimolecular mechanism. As similar activation enthalpies are obtained for both reactions, the rate-determining step in both cases is assumed to be the rotation of the Fe(CO)2 L (L=CO or 1-hexyne) unit to accommodate the incoming ligand. The kinetic profile for the displacement of 1-hexene is quite different than that for the alkyne and, in this case, both reaction channels, that is, dissociative (SN 1) and associative (SN 2), were found to be competitive. Because DFT calculations predict similar binding enthalpies of alkene and alkyne to the iron center, the results indicate that the bimolecular pathway in the case of the alkyne is lower in free energy than that of the alkene. In complexes of this type, subtle changes in the departing ligand characteristics and the nature of the mercapto bridge can influence the exchange mechanism, such that more than one reaction pathway is available for ligand substitution. The difference between this and the analogous study of (μ-pdt)[Fe(CO)3 ]2 (pdt=S(CH2 )3 S) underscores the unique characteristics of a three-atom S-S linker in the active site of diiron hydrogenases.
Collapse
Affiliation(s)
- Jan H Blank
- Department of Chemistry, Texas A&M University at Qatar, Doha, Qatar
| | - Salvador Moncho
- Department of Chemistry, Texas A&M University at Qatar, Doha, Qatar
| | - Allen M Lunsford
- Department of Chemistry, Texas A&M University, College Station, Texas, 77843, USA
| | | | | | - Ashfaq A Bengali
- Department of Chemistry, Texas A&M University at Qatar, Doha, Qatar.
| |
Collapse
|
38
|
Schilter D, Camara JM, Huynh MT, Hammes-Schiffer S, Rauchfuss TB. Hydrogenase Enzymes and Their Synthetic Models: The Role of Metal Hydrides. Chem Rev 2016; 116:8693-749. [PMID: 27353631 PMCID: PMC5026416 DOI: 10.1021/acs.chemrev.6b00180] [Citation(s) in RCA: 397] [Impact Index Per Article: 49.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Hydrogenase enzymes efficiently process H2 and protons at organometallic FeFe, NiFe, or Fe active sites. Synthetic modeling of the many H2ase states has provided insight into H2ase structure and mechanism, as well as afforded catalysts for the H2 energy vector. Particularly important are hydride-bearing states, with synthetic hydride analogues now known for each hydrogenase class. These hydrides are typically prepared by protonation of low-valent cores. Examples of FeFe and NiFe hydrides derived from H2 have also been prepared. Such chemistry is more developed than mimicry of the redox-inactive monoFe enzyme, although functional models of the latter are now emerging. Advances in physical and theoretical characterization of H2ase enzymes and synthetic models have proven key to the study of hydrides in particular, and will guide modeling efforts toward more robust and active species optimized for practical applications.
Collapse
Affiliation(s)
- David Schilter
- Center for Multidimensional Carbon Materials, Institute for Basic Science (IBS), Ulsan 44919, Republic of Korea
- Department of Chemistry, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of Korea
| | - James M. Camara
- Department of Chemistry, Yeshiva University, 500 West 185th Street, New York, New York 10033, United States
| | - Mioy T. Huynh
- Department of Chemistry, University of Illinois at Urbana–Champaign, 600 South Mathews Avenue, Urbana, Illinois 61801, United States
| | - Sharon Hammes-Schiffer
- Department of Chemistry, University of Illinois at Urbana–Champaign, 600 South Mathews Avenue, Urbana, Illinois 61801, United States
| | - Thomas B. Rauchfuss
- Department of Chemistry, University of Illinois at Urbana–Champaign, 600 South Mathews Avenue, Urbana, Illinois 61801, United States
| |
Collapse
|
39
|
[Fe–Fe] hydrogenase models: Iron(I)-carbonyl clusters coupled to alpha- and para-toluenethiolate ligands. Polyhedron 2016. [DOI: 10.1016/j.poly.2015.12.031] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
|
40
|
Wisener JC, Patton KT, Agbo JK, Mebi CA. Phenylthiolate-diironhexacarbonyl complexes: a comparative conceptual DFT and electrochemical study. TRANSIT METAL CHEM 2016. [DOI: 10.1007/s11243-016-0028-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
41
|
Wen N, Cao J, Du SW. Synthesis, characterization and electrochemistry of phosphine substituted derivatives with quinolyl-functionalized diiron. Polyhedron 2015. [DOI: 10.1016/j.poly.2015.10.032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
|